Test Description
WARNING: This page is about a different car, the 2004 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 4: This step tests for a short to ground on the ignition 1 voltage supply circuit of the fuel injector.
- 5: This step tests for an open ignition 1 voltage supply circuit between the injector fuse and a fuel injector electrical connector.
Fuel Injector Circuit Diagnosis
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module (PCM) Connector End Views |
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| 1 | Did you perform the Diagnostic System Check-Engine Controls? | Go to Step 2 | Go to Diagnostic System Check - Engine Controls |
| 2 | Are any fuel injector DTCs set? | Go to DTC P0201-P0206 | Go to Step 3 |
| 3 | Inspect the fuel injector fuse. Is the fuel injector fuse open? |
Go to Step 4 | Go to Step 5 |
| 4 |
|
Go to Step 6 | Go to Diagnostic Aids |
| 5 |
|
Go to DTC P0341 | Go to Step 7 |
| 6 |
|
Go to Step 8 | - |
| 7 | Repair the open or poor connection in the ignition 1 voltage supply circuit of the fuel injectors. Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 8 | - |
| 8 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |